Not sure about 30D...since I am not a canon user, but ) Z" }, W6 i* k7 k8 f 0 b8 E) S5 p& b3 p# A+ V6 Z* g3 NFor most of the Cameras, this sound is simulated, and it can be turned off in setting manu...' }* O6 y( \" y2 H
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The shutter and reflective lense sound seldom as loud as what you hear. If yes, they would be damaged very soon.